Refill cartridge



FIG. 1 is a front perspective view of a refill cartridge in accordancewith the present design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines shown in the drawings illustrate portions of the designthat form no part of the claimed design.

CLAIM The ornamental design for a refill cartridge, as shown anddescribed.